Kelly Clarkson's track sales get 'Stronger' by the week

Now we know: Mr. Know It All was just the set-up for Stronger (What Doesn't Kill You). Kelly Clarkson's new single sold 174,000 copies last week -- a 49% increase in its weekly sales, according to Nielsen SoundScan -- making it the third-most-downloaded single last week, after David Guetta and Nicki Minaj's Turn Me On and Adele's Set Fire to the Rain. And, like Kelly's Stronger album, it also passed the half-million sales mark last week. In other words, it's turning into a big ol' hit.

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About Brian Mansfield

Nashville-based Brian Mansfield began writing about music for USA TODAY in 1997 and took over Idol Chatter just before the start of Season 8. He co-authored Make Me a Star: Industry Insiders Reveal How to Make It in Music, and while he has never auditioned for American Idol, he did sing Boot Scootin' Boogie at Disney World's American Idol Experience the day the attraction opened (he lost). More about Brian | E-mail Brian